Hướng dẫn bằng hình ảnh truyền thông giữa 2 PLC s7 300 qua mạng Profibus

Hướng dẫn bằng hình ảnh truyền thông giữa 2 PLC s7 300 qua mạng Profibus

COMMUNICATION BETWEEN 2 CPU 313C-2DP I.CPU Slave

1 Make new profibus network

2 From properties of DP choose:

+ Operating mode: slave

+ Configuration : make one virtual module

3 Save and compile it

II.CPU Master

1 Make slave station: drag and drop CPU31x from configuration station

2 Click the button Connect

3 Choose tab Configuration: make virtual I/O slot connection

III Program

1 Insert OB: 80->87,122

2 In OB1(Slave, don’t need in master) drag and drop: FC1 DP_SEND, FC2 DP_RECV

3 Use virtual I/O as real I/O: input of mater is output of slave and inverse

(example: IB8 is virtual I/O- virtual output QB8 from master, QB124 is real I/O of slave station)